To install the modeline-0.2.3 :
download modeline-0.2.3 and modeline.man , then isntall as follows

cp modeline-0.2.3 /usr/bin/modeline
chmod 755 /usr/bin/modeline
cp modeline.man /usr/man/man1/modeline.1
chmod 644 /usr/man/man1/modeline.1